When buildings rise, bridges span rivers, or towers stretch skyward, steel often shapes their bones. But not all steel is the same. Some steel types bear loads and form the very structure of what we build. For those kinds safety isn’t optional. It’s critical. That’s where BIS certification under IS 4923 steps in. It ensures that Hollow Steel Sections for Structural Use meet strict Indian standards before entering the market

IS 4923 isn't just a number. It’s a code of trust. It tells buyers and builders that the steel they use is strong, safe, and fit for structural use. And the Bureau of Indian Standards (BIS) is the authority that grants this seal. If your company manufactures or imports hollow steel sections meant for structural work in India, getting BIS certification is not just beneficial—it’s mandatory.

In this article, we will explain the complete process to obtain BIS certification under IS 4923

What Is IS 4923 BIS Certification?

The IS 4923 Standard covers cold-formed hollow steel sections used in buildings. Square, rectangular or round steel sections are commonly used in buildings, flyovers, industries and major steel structures

As a result of the BIS testing process, a certification indicates that the product has undergone testing for its physical dimensions, mechanics, chemical properties and performance. A manufacturer can place the ISI mark only after finishing this process.

Who Needs BIS Certification Under IS 4923?

This certification applies to the following entities:

• Indian manufacturers producing hollow steel sections for structural use
  
  

• Overseas manufacturers exporting these products to India
  
  

• Importers and distributors who want to sell these products in the Indian market
  
  

• Government or private infrastructure contractors using these materials for certified projects
  
  

Step-by-Step Process to Get BIS Certification for IS 4923

Let’s now explore how you can get BIS certification under IS 4923. This process includes both documentation and technical assessments.

Step 1: Application Submission

You must apply online through the BIS Manak Portal. The manufacturer or their authorized Indian representative (AIR) must register and create an account. Here’s what this step involves:

• Fill Form VI and Form I
  
  

• Upload all required documents
  
  

• Choose the appropriate Standard (IS 4923)
  
  

• Submit the factory details and manufacturing process
  
  

• Pay the required application fee
  
  

Once submitted, BIS will verify your application.

Step 2: Documentation Preparation

The documentation should be complete and accurate. Below are the key documents required:

• Business registration certificate
  
  

• Factory layout and process flow diagram
  
  

• Quality control manual
  
  

• List of manufacturing and testing equipment
  
  

• In-house test results for mechanical and chemical properties
  
  

• Authorization letter (for foreign applicants via AIR)
  
  

• Trademark registration (if applicable)
  
  

Keep copies of all originals ready for inspection.

Step 3: Factory Audit and Inspection

After your application is accepted, BIS schedules a factory audit. An officer visits your production unit to:

• Inspect production facilities
  
  

• Check raw material sourcing
  
  

• Verify testing equipment and calibration
  
  

• Observe quality control practices
  
  

• Collect product samples for lab testing
  
  

If your facility fails to meet the standard, BIS may issue a non-conformity report (NCR), which must be corrected within a deadline.

Step 4: Product Testing in BIS-Recognized Lab

Samples collected during the audit are sent to a BIS-recognized lab. The lab conducts tests to confirm:

• Thickness and shape compliance
  
  

• Yield stress and tensile strength
  
  

• Elongation capacity
  
  

• Surface quality and finish
  
  

• Chemical composition of steel
  
  

Only when the test results meet the IS 4923 standard can your product qualify.

Step 5: Grant of BIS Certification

If all tests pass and the factory meets the standard, BIS grants the ISI certificate. This includes:

• A unique license number
  
  

• Permission to use the ISI mark
  
  

• Certification for a specified product range and location
  
  

This license is valid for one year, and you must apply for renewal annually by submitting fresh documents and test results.

Renewal of BIS License for IS 4923

To keep your certification valid, you must renew it before expiry. The renewal process is easier if there have been no major non-conformities. You’ll need to submit:

• Updated in-house test reports
  
  

• Declaration of compliance
  
  

• Renewal application and fees
  
  

• Annual performance reports
  
  

In some cases, BIS may re-inspect the factory before renewing.

What Happens If You Don’t Get Certified?

Selling non-certified hollow steel sections in India is a legal violation. The consequences include:

• Product bans or seizures
  
  

• Cancellation of government tenders
  
  

• Legal fines and penalties
  
  

• Loss of business reputation
  
  

• Project delays or rejections
  
  

So, it is always smarter to invest in certification rather than risk your business.

Final Thoughts

Getting BIS certification for Hollow Steel Sections under IS 4923 may look long, but it brings long-term value, market credibility, and legal clearance. It’s not just a label—it’s a promise of quality that Indian buyers trust.

Whether you’re manufacturing in India or exporting to the Indian market, you need this certification to stay in business. The process takes time and care, but it ensures that your product is strong, safe, and structurally sound.